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ARS Home Office of Communications Images Photos May06





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Image Number D479-1 Microbiologist Jerry Sims holds a culture of giant ragweed *(Ambrosia trifida)* seeds embedded in agar, some overgrown with soil microorganisms. Sims is investigating how and why some weed seeds escape decay by these organisms.  Photo by Peggy Greb.  640 pixels wide: (d479-1.jpg)   Please visit our Image Gallery


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